Fake tinder?

My boyfriend keeps asking me if he can make a fake tinder. I asked him why and he said for fun. I don't trust him on it, I can't even trust him to hang out with other girls because of things he's done in the past. I don't know what to do. Should I just let him make one?

ALSO: he says he had no intention of doing it to meet other girls, and that I should trust him. But also in the past, he's said that I can't talk to other guys, but HE SAID HE COULD TALK TO OTHER GIRLS CUZ IT'S DIFFERENT LIKE WTF, NO????